What the review found
Eating more protein was associated with stronger handgrip strength in postmenopausal women, according to a review that combined seven studies covering 8,922 women. The same pattern held across several statistical analyses, and the women who ate more protein also tended to have a lower body mass index, a measure based on weight and height.
The review is observational, which means it shows an association rather than cause and effect. Researchers did not assign a specific protein intake to participants. They observed existing diets and strength. Because of that design, the review cannot prove that protein caused the difference, and it did not establish a specific protein target.
Why handgrip strength matters
Handgrip strength is often used to measure muscle strength and physical function. The review used grip strength to indicate overall muscle health after menopause.
Muscle can support longevity beyond just enabling heavier lifting. Muscle mass can affect how quickly a person recovers from illness or hospitalization, and strength may signal how well someone can handle physical stress as they age.
Why focus on postmenopausal women
Much of the research on protein and muscle has focused on men, leaving fewer answers about women after menopause. Estrogen supports muscle health, and its decline around menopause can make maintaining muscle mass and strength more difficult. The review set out to fill that gap by looking specifically at women past the menopausal transition.
What the studies showed
Women who ate more protein generally had stronger handgrip strength than those who ate less. Age did not explain the difference between groups, and the association was consistent in sensitivity analyses. The review said women who ate more protein may also have been more active or had healthier diets, which could have contributed to the pattern.
Some studies indicate protein intake may help maintain muscle strength after menopause.
What the review did not establish
The review did not determine an optimal protein intake. The studies used different definitions of higher and lower intake, so no specific number can be drawn from the findings. Eating more is not automatically better if enough protein is already being consumed.
Separate research on protein intake in postmenopausal women found that ingesting 35 grams of whey protein per meal was sufficient to maximize muscle protein synthesis, even when calories were reduced. That study followed 40 postmenopausal women who were overweight on a short-term calorie-restricted diet.
How to put protein to work
Including protein regularly throughout the day is a practical starting point. Examples include eggs or Greek yogurt at breakfast, then beans, chicken, fish, tofu, or other protein-rich foods at lunch and dinner. Pairing adequate protein with resistance training gives muscles a reason to stay strong.
Bodyweight exercises, resistance bands, and weights can provide useful muscle-building stimulus without requiring a gym membership. Resistance exercise increases aging muscle mass and strength, and these adaptations may be further enhanced with certain nutritional interventions.
The bigger picture: muscle as a long-term strategy
Research on sarcopenia, the age-related loss of muscle mass and function, shows that nutritional status and protein intake affect the condition.
The review finds that protein supports muscle-health strategies that include regular strength training. Protein should not become an afterthought as nutrition needs shift with age.
FAQ
Does eating more protein make handgrip stronger in postmenopausal women?
The review found an association between higher protein intake and stronger handgrip in 8,922 postmenopausal women, but it was observational and cannot prove cause and effect.
How much protein should a postmenopausal woman eat for muscle strength?
The review did not establish a specific protein target. It suggested including protein regularly throughout the day, such as eggs or Greek yogurt at breakfast and beans, chicken, fish, or tofu at lunch and dinner.
Is protein alone enough to maintain muscle after menopause?
The review stated the findings support making protein part of a broader muscle-health strategy that includes regular resistance training, not relying on protein alone.
